Well done John!...When replacing the head bolts torque down to 28-30ft/lbs...Only lubricate with a light machine oil such as '3in 1'...

Use an annealed solid copper head gasket for reliability rather than a modern 'composite' type...Ian

email (option): ian@wright52.plus.com

Ian
Thanks for the torque setting, that was going to be my next question. It doesn't seem to be mentioned in any literature.
Just waiting for a new set of bolts to arrive. I already have a solid gasket in stock on advice from previous posts.
At this rate I might be on the road by Easter!!
Thanks again
John

email (option): jandmmetcalfe@btinternet.com

['Thanks for the torque setting, that was going to be my next question. It doesn't seem to be mentioned in any literature.']

The M20 predates the common use of torque figures...The figure given is something I worked out by looking at various later bikes that have the same diameter head bolts and do have a torque setting, followed by a degree of trial and error under running conditions...Ian

email (option): ian@wright52.plus.com